“It’s time for Harry to put up or shut up,” Romney told Fox News Radio.

For days, Reid has been claiming that Romney paid no taxes for 10 years, saying a Bain investor and others told him so. Romney called the accusation “totally and completely wrong” and accused the White House of orchestrating the attack.

“Harry’s going to have to describe who it is he spoke with because of course that’s totally and completely wrong,” he said. “It’s untrue, dishonest and inaccurate. It’s wrong. So I’m looking forward to have Harry reveal his sources, and we’ll probably find out it’s the White House.”